Boiler construction



July 5, 1932.

W. F. M PHEE BOILER CONSTRUCTION Filed Oct. 10. 1930 2 Sheets-Sheet 1 Q INVENTOR BY H ZW/am FMP/ree ATTORNEYS July 5, 1932. w. F. M PHEE BOILER CONSTRUCTION Filed Oct. 10. 1950 2 Sheets-Sheet 2 fi INVENTOR I/V/fl/d/WFM P/Me BY I ATTORNEYS Patented July 5, 1932 WILLIAM F. McrnEE, or cnrcneo, ILLIivoIs normin oonsrrnucrion l A Application fils fictob er 1'0, 195m. iserial "no; 4 39.853;

' My invention relates to improvements in boiler constructions,'and"it consists in the combinations, constructions, and" arrangements'herein described and claimed.

An object of my invention is to provlde a boiler construction in'which a novel fin'struc- .ture is employed whereby a maximum heating surface is attained, and inwhich the generalboiler design is suchithat oil or gas burners maybe effectively employed.

A further object is to provide a boiler in which the fin construction is arranged in such a manner that theseelements serve a double function as supporting and reinforcing elements.

A further object is to providea boiler construction designed in such amanner that the] necessity for stay bolts and similar bracing is entirely dispensed with, irrespective of the capacity of the boiler.

larly pointed out in the appended claims.

My invention is illustrated in the accomapplication, in which Figure 1 is a sectional View of a boiler embodying'my invention,

Figure 2 is a sectional view taken along the line 2-2 of Figure 1, and

Figure 3 is a diagrammatic front elevation of the boiler.

and a second chamber 6 which communicates with a flue 7 The burnt products of combustion pass to the chamber 6 and therefrom through the flue 7. The base is provided with a second flange 8 adjacent to which a' cylindrical member 9 is positioned. This member is provided with aplurality of openings 10, see Figure 2, in its wall for receiv-' ing fins 11.. The sides of the fins and their lower ends are preferably positioned within the openings 10 and may be connected with.

250116 w en- P111826.- Th o le -my;

the member 9 by'weldingz- The fins, as will be seen in; referringtoFigureQ, are radially aligned-1' Anopening12 is provided the side of the boiler for permittingacces'stothe interior ofthe fire boX. nidoor'yiamayibe arranged forclosing the. opening. This doo nr,

may be provided with suitable dampers. Certain of the fins are slightly 'shorterthan the remaining fins for'xpermitting the constructionof the opening 12 in :the' side of the boiler." In the present layout, two of'the fins are shortened. 'In other respects these two fins areidentical' with the remaining fins. TA crown sheet 1i is secured-to the upper ends of the fins. The crownsheet is prefer- T ably provided with openings 'conforming-to-- the shape; of the fins for receiving the ends jofthe latter. The fins may beweldedto the crownfl'sheet; jThe crown'sheet-is provided I i with a flang'e'115 havinga ring 16' which; pro Other objects and advantages will appear in the following specification, and the novel features of the invention will be particu- The cylindrical member Qmay their sides. byfmeans of closure plates-17" These plates may be also; welded to'tlieffins.

The outer diameter of the ring 16-issoinewhat larger than thediayne'ter ofthe'imember The ring is cut out for receiving the upper i ends of apluralityof hollow curved members 18.- These members are secured within openings 19 in a web 20 which forms a part of the base .4; The lower ends' of the members 18 may be welded within the openings 19'. 'It

will-thus be-seeii 'that'the interior of *the member 9,-,whichfmay'be termed' aniinner shell, is placed in communication with the "chamber 6 through the medium'of themem bers 18. The burntproducts of combustion from "the interior of the some may 'pass'} downwardly through the members 18 intothe 1 chamberjfi and through-the flue 7. The boiler'may be provided with a water glass 21, see Figuref3, and a plurality of tri- :cocks722. The boiler in the presentinstance is provided with a waterand steam chamber 23'above the crown sheet 14. Theboiler may be provided with inlet pipes 24,-"outletfpip'es h I bewelded'to' the ring; The portionsof the fins whichare 1 disposed] above the ring 16 are closed upon panying drawings, forming part of this together than the lower ends.

blepositioned-in thechamber 5. This chamber also-be provided with a pressure gauge 27. Such devices are of course well known in the art and require no detailed description.

In operation, a burner of any suitable type is placed within the chamber 5. This chamber, together with the interior of the member 9, may be defined as a combustion chamber.

7 The specific construction disclosed in the present instance is primarily designed "for use in connection with oil and 'gas burners, The structure may be narrowed upwardly rather than having 1 the fins arranged in parallelism as shown in Figure 1. In other'words, the upper ends of the fins may bearranged closer Any suitable typeof oil or gasburner may mayalso belined with fire brick, if desired. The base may also be provided with openings forreceiving conduits and the like associated a with the burner structure, I In the present insurfaces provided by these elementsare posii tioned WhBI'fL-Bftllfi heat is most intense; The

.are many burners manufactured which may stance I have notshown a burner since there be employed. The base isprovided with a door 28, for permitting access to the cham-' ber 5..

, The

fins-are positioned so that the heating 1 said .flue' chambers.

vcompartment therebetween, said casing having an open bottom end for providing commun icationbetween the interior of the casing and the. combustion chamber, longitudinally extending and'radially positioned hollow casingportions connected withthe casing on the interior thereof, said casing being proyided withopenings thereinfor providing communication between the .interioro i't'he casing portions and said compartment,apar-;

titioning portion connectedlwith the top {port on ofthe casing for providing'anauxilia'ry flue chamber therebetween, said auxiliary V fiuechamber being in communication with the interior of the casing, and hollow'mem-- bers for providing 'communication between LL E M'Q EE finsare also arranged so that a central opening 29 isprovided, see Figure 2. Flames ina boiler of this'type tend tomove toward the center-of the device and work upwardly. I The, V arrangement of the fins is such thatthe flame and the burnt products of combustion may move freelyand atthe same time a maximum heating efliciency; is provided. fThe burnt," I

products of. combustion pass upwardly,

from the boiler through the flue 7 I downwardly through the members 18, and ,7 i I o I Water circulates between the inner shell 9 andtheouter shell 1 and around the members 8.; The fins communicate with the space be-.

.. tween the two shells. 7 Water may circulate upwardly through the fins and into the chamber 23. I

I claim; I 1. A boiler construction comprising a base having afiue chamber,an.inner shell and an I I outer shell disposed upon the base and arranged in spaced-apart relation, a crown sheet having a cylindricalportion of large diameter than the'inner shell and a ring secured to the latter, said inner shell being provided with openings in its side,a pluralityof hollow fins secured to the inner shell and having open sides communicating with the openings in the innershell, the outer edges of said fins being. substantially aligned with the inner edge of said ring, the upper ends ofthe fins being ojpen and communicating with openings in the crownsheet, plates for closing the open side portions of the fins extending between the .ring and the crown sheet, and pluralityl' of hollow curved connected with said ring and 

